[css-display] Support display: contents pseudo-elements.

third_party/WebKit/Source/core/layout/LayoutTextFragment.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #include "core/layout/LayoutTextFragment.h"
 
 #include "core/dom/FirstLetterPseudoElement.h"
 #include "core/dom/PseudoElement.h"
 #include "core/dom/StyleChangeReason.h"
 #include "core/dom/Text.h"
+#include "core/frame/FrameView.h"
 #include "core/layout/HitTestResult.h"
 
 namespace blink {
 
 LayoutTextFragment::LayoutTextFragment(Node* node,
                                        StringImpl* str,
                                        int startOffset,
                                        int length)
     : LayoutText(node,
                  str ? str->substring(startOffset, length)
                      : PassRefPtr<StringImpl>(nullptr)),
       m_start(startOffset),
       m_fragmentLength(length),
       m_isRemainingTextLayoutObject(false),
       m_contentString(str),
       m_firstLetterPseudoElement(nullptr) {}
 
 LayoutTextFragment::LayoutTextFragment(Node* node, StringImpl* str)
     : LayoutText(node, str),
       m_start(0),
       m_fragmentLength(str ? str->length() : 0),
       m_isRemainingTextLayoutObject(false),
       m_contentString(str),
       m_firstLetterPseudoElement(nullptr) {}
 
 LayoutTextFragment::~LayoutTextFragment() {
   ASSERT(!m_firstLetterPseudoElement);
 }
 
+LayoutTextFragment* LayoutTextFragment::createAnonymous(PseudoElement& pseudo,
+                                                        StringImpl* str,
+                                                        unsigned start,
+                                                        unsigned length) {
+  LayoutTextFragment* text =
+      new LayoutTextFragment(nullptr, str, start, length);
+  text->setPseudoForAnonymous(pseudo);
+  pseudo.document().view()->incrementVisuallyNonEmptyCharacterCount(length);
+  return text;
+}
+
+LayoutTextFragment* LayoutTextFragment::createAnonymous(PseudoElement& pseudo,
+                                                        StringImpl* str) {
+  return createAnonymous(pseudo, str, 0, str ? str->length() : 0);
+}
+
 void LayoutTextFragment::willBeDestroyed() {
   if (m_isRemainingTextLayoutObject && m_firstLetterPseudoElement)
     m_firstLetterPseudoElement->setRemainingTextLayoutObject(nullptr);
   m_firstLetterPseudoElement = nullptr;
   LayoutText::willBeDestroyed();
 }
 
 PassRefPtr<StringImpl> LayoutTextFragment::completeText() const {
   Text* text = associatedTextNode();
   return text ? text->dataImpl() : contentString();
@@ skipping 87 matching lines @@
   LayoutObject::updateHitTestResult(result, point);
 
   // If we aren't part of a first-letter element, or if we
   // are part of first-letter but we're the remaining text then return.
   if (m_isRemainingTextLayoutObject || !firstLetterPseudoElement())
     return;
   result.setInnerNode(firstLetterPseudoElement());
 }
 
 }  // namespace blink